"YellowTAB is proud to announce the immediate availability of the ZETA Demo CD. The CD gives users the chance to test ZETA without having to install any software. This lets prospective customers convince themselves of speed, security and simplicity of ZETA before purchasing the full version. The ZETA Demo CD costs EUR 9.95 ($12,-) and is available from regular ZETA resellers."

The only way I would purchase this demo was if it came with a coupon or other incentive to buy the full version.. such as a $15 (yes i am aware that it is priced at $12) off voucher for the full version.

That way if I like what I see, I can put the money I spent for the demo version towards the full version, otherwise I think I'll just stay away until a free downloadable demo is available.